xref: /freebsd/usr.sbin/bhyve/mem.h (revision b1f9167f94059fd55c630891d359bcff987bd7eb)
1 /*-
2  * Copyright (c) 2012 NetApp, Inc.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * $FreeBSD$
27  */
28 
29 #ifndef _MEM_H_
30 #define	_MEM_H_
31 
32 #include <sys/linker_set.h>
33 
34 struct vmctx;
35 
36 typedef int (*mem_func_t)(struct vmctx *ctx, int vcpu, int dir, uint64_t addr,
37 			  int size, uint64_t *val, void *arg1, long arg2);
38 
39 struct mem_range {
40 	const char 	*name;
41 	int		flags;
42 	mem_func_t	handler;
43 	void		*arg1;
44 	long		arg2;
45 	uint64_t  	base;
46 	uint64_t  	size;
47 };
48 #define	MEM_F_READ		0x1
49 #define	MEM_F_WRITE		0x2
50 #define	MEM_F_RW		0x3
51 
52 void	init_mem(void);
53 int     emulate_mem(struct vmctx *, int vcpu, uint64_t paddr, struct vie *vie);
54 
55 int	register_mem(struct mem_range *memp);
56 int	register_mem_fallback(struct mem_range *memp);
57 int	unregister_mem(struct mem_range *memp);
58 
59 #endif	/* _MEM_H_ */
60